 /*******************************************************************************
  * Copyright (c) 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  ******************************************************************************/

 package org.eclipse.ui.internal.commands;

 import java.util.HashMap ;
 import java.util.Map ;

 import org.eclipse.ui.commands.IElementReference;
 import org.eclipse.ui.menus.UIElement;

 /**
  * Our element reference that is used during element
  * registration/unregistration.
  *
  * @since 3.3
  */
 public class ElementReference implements IElementReference {

     private String commandId;
     private UIElement element;
     private HashMap parameters;

     /**
      * Construct the reference.
      *
      * @param id
      * command id. Must not be <code>null</code>.
      * @param adapt
      * the element. Must not be <code>null</code>.
      * @param parms.
      * parameters used for filtering. Must not be <code>null</code>.
      */
     public ElementReference(String id, UIElement adapt, Map parms) {
         commandId = id;
         element = adapt;
         if (parms == null) {
             parameters = new HashMap ();
         } else {
             parameters = new HashMap (parms);
         }
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.commands.IElementReference#getElement()
      */
     public UIElement getElement() {
         return element;
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.commands.IElementReference#getCommandId()
      */
     public String getCommandId() {
         return commandId;
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.commands.IElementReference#getParameters()
      */
     public Map getParameters() {
         return parameters;
     }
 }

